//index.js
//获取应用实例
const app = getApp()


Page({
  data: {
    motto: '开始背单词',
    userInfo: {},
    hasUserInfo: false,
    canIUse: wx.canIUse('button.open-type.getUserInfo'),
    items: [{
        name: 'asc',
        value: '顺序'
      },
      {
        name: 'random',
        value: '随机'
      }
    ],
    strategy: ""
  },
  //事件处理函数
  bindViewTap: function() {
    wx.navigateTo({
      url: '../logs/logs'
    })
  },

  changeStrategy: function(strategy) {
    let items = this.data.items;
    for (var i = 0; i < items.length; i++) {
      if (items[i].name === strategy) {
        console.log("s=" + strategy + "; item=" + items[i].name)
        items[i].checked = "true";
      } else {
        items[i].checked = "";
        console.log("s=" + strategy + "; item=" + items[i].name)
      }
    }
    this.setData({
      items: items,
      strategy: strategy
    })
  },

  onLoad: function() {

    let strategy = app.getStrategy();
    this.changeStrategy(strategy)
    if (app.globalData.userInfo) {
      this.setData({
        userInfo: app.globalData.userInfo,
        hasUserInfo: true
      })
    } else if (this.data.canIUse) {
      // 由于 getUserInfo 是网络请求，可能会在 Page.onLoad 之后才返回
      // 所以此处加入 callback 以防止这种情况
      app.userInfoReadyCallback = res => {
        this.setData({
          userInfo: res.userInfo,
          hasUserInfo: true
        })
      }
    } else {
      // 在没有 open-type=getUserInfo 版本的兼容处理
      wx.getUserInfo({
        success: res => {
          app.globalData.userInfo = res.userInfo
          this.setData({
            userInfo: res.userInfo,
            hasUserInfo: true
          })
        }
      })
    }
  },
  getUserInfo: function(e) {
    app.globalData.userInfo = e.detail.userInfo
    this.setData({
      userInfo: e.detail.userInfo,
      hasUserInfo: true
    })
  },
  navigateToMain: function(e) {
    wx.navigateTo({
      url: '../main/main'
    })

  },
  checkboxChange: function(e) {
    let strategy = "";
    if (this.data.strategy == "asc") {
      strategy = "random";
    } else {
      strategy = "asc";
    }
    this.changeStrategy(strategy)
    app.setStrategy(strategy)
  }

})